Compilare: main.cpp: In function 'int solve(int, int, int)': main.cpp:50:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | while (lit >= v[i].length()) ++ i; | ~~~~^~~~~~~~~~~~~~~~ main.cpp:53:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | if (lit >= v[j].length()) continue; | ~~~~^~~~~~~~~~~~~~~~